I have deep desire to study Physics after I graduate from Computer Engineering; want to know if I have what it takes to be successful in this field

Believe it or not, I too was in an exactly similar position as you. So, I can tell you how I made my choice to study physics. I graduated in civil engineering in india in 2017. I too had a similar feeling about physics but decided to play it safe and took up a job in civil after placements. Ironically that experience made up my mind regarding how I want to spend the rest of my life. I quit two months back. I am now preparing for IIT JAM Physics. The syllabus for JAM Physics has quite a bit of overlap with 12th Physics. So, with 4-5 months preparation time, I think it is doable.

Now, it may seem a simple matter but it was not an easy decision. Coming to your question, How can I be sure? I wasn’t 100% sure but by the process of elimination, I decided this would be the best course of action for me. I liked physics a lot in 12th, always did well at it and I have been studying Feynman’s lectures on physics. This book was the final nail since I strongly resonated with it.

In your case, you have studied Computer applications which would be much more relevant in your physics career than my civil engineering. Plus, you are still in your bachelor’s and you won’t have to waste a year like me.

So, your questioning if physics is a career for you is correct. You need to resolve that. That is something only you can do. Once you have decided, what you should do next will become much clearer. But why are you considering abroad as a place to study? And why do you think repeating a bachelor’s a must for switching to physics? You can try to get admissions to an Msc course in physics at NIT’s or IIT’s via IIT JAM. BTech students are eligible for admission to msc physics courses in india but you need to check yourself if you qualify. Then you can possibly apply for PhD abroad. It won’t be easy I suppose but it is possible. And that should be enough if you truly wan’t to do it.